The goal of this study is to evaluate the safety of allogeneic cMSCs established by the SCM and manufactured in GMP facility. This phase I clinical trial is a multicenter, single dose study of cMSC (1 x 10e6 cMSCs/Kg recipient's bodyweight). Clonal MSCs will be infused to acute or chronic GVHD patients via an intravenous injection. Every patients will receive the same treatment